Call a glass expert! A good local glass company should be
able to handle the job quickly, safely, and inexpensively.


Okay, I called a glass company and the guy said it's really easy if I
just bring the window in. When I told him there's no way to remove
the window, he said he'd come out later and look at it.

He thought there should be release catches, but there aren't. The
window itself is wood, and the sash is vinyl. All I can see is that
you'd have to unscrew the vinyl sash from the frame.